Total Oxidant Levels Research Articles

Observation of the neuroprotective efficacy of vitamin K in a streptozocin-induced diabetes model in chick embryos.

Diabetes mellitus (DM)is a metabolic disease characterized by hyperglycemia due to insulin deficiency and/or resistance. Vitamin K (VK)is a group of fat-soluble molecules, including naturally occurring vitamin K1 (phylloquinone). vitamin K2 (menaquinone), and synthetic vitamin K3 (menadione). Beyond coagulation, the health benefits of VK have been described to play different roles in both physiological and pathological processes such as inflammation, energy metabolism, neuroprotection, cellular growth, and survival. It was aimed to observe the antioxidant and/or neuroprotective activity of vitamin K1 in our model of chick embryo diabetic neuropathy (DN)induced by streptozotocin (STZ). Ninety White Leghorn, fertile and 0-day-old SPF (specific pathogen-free) eggs (57 ± 4 gr) were used in the study. Chick embryo blood brain tissues were taken for biochemical evaluation. Plasma insulin and glucose levels were measured. In addition, brain tissue total antioxidant level (TAS),total oxidant level (TOS),malondialdehyde (MDA), and vascular endothelial growth factor (VEGF)levels were measured. Plasma glucose levels were higher in the STZ-treated groups and lower in the treatment groups. Plasma insulin levels were observed to be higher in STZ groups in groups treated with high VK. Low TAS, high MDA, TOS, and VEGF levels were recorded in brain tissue STZ groups. Low VEGF, TOS, and MDA levels were recorded in the group treated with the highest VK, while high TAS levels were observed. In our STZ-induced chick embryo diabetic neuropathy model, we observed that VK1 reduced oxidant damage by showing antioxidant properties or by modulating antioxidant enzymes.

Hematological parameters, obesity, stress and oxidant - antioxidant indicators in patients with or without recurrent aphthous stomatitis: A case control study

IntroductionRecurrent Aphthous Stomatitis (RAS) is a frequent chronic disease of the oral cavity that affects 5–25 % of the population with a plethora of predisposing factors. Despite its equivocal etiology, immune alterations, hematologic deficiencies and oxidative stress has been reported to be significant etiologic factors. Stress and obesity are other environmental factors that have been studied to understand associations with RAS. ObjectivesThis study investigated the association of stress, hematologic parameters, oxidative indices and other selected salivary factors in a case control study on RAS Methods: Twenty-two participants each in both case and control groups were recruited with saliva and serum samples collected from them after a self-administered Recent Life Changing Questionnaire (RLCQ). OHI-S and salivary flow rate (SFR) were calculated with selected hematologic parameters and oxidative indices such as Total oxidant (TOS) and anti-oxidant (TAS) levels and their ratio - Oxidative Stress Index (OSI). Anti-oxidative indices of Ferric-Reducing Antioxidant Power (FRAP) and Glutathione Peroxidase Activity (GsPHx) were also estimated. Results: The RAS group had a significantly higher RLCQ scores at a median of 145 more than the control (57.5). There was no significant in their obesity indices, however there was a significant higher mean in the ESR (p< 0.0001) and Vit B12 (p = 0.0001); OHI-S was also significantly higher in the RAS group with a median of 1.65. Both the salivary and serum TOS were significantly higher in the RAS (10.0 ± 3.8, 15.4 ± 8.9) compared to the control group (7.92 ± 1.49, 9.56 ± 3.5). GsPHx activity was significantly higher in both the saliva and serum in the control group (0.08 ± 0.08, 0.19 ± 0.11) while nil significant difference was found in the FRAP activity. Regression showed most important variables to be the salivary GsPHx activity, followed by serum OSI and GsPHx activity. ConclusionThe oxidative indices of TOS, TAS and GsPHx can serve as significant biomarkers in detecting RAS. This further corroborates the role of immune dysregulation in the etiology and predisposition to RAS.

Neuroprotective Potential of Isoquinoline Alkaloids from Glaucium grandiflorum Boiss. and A. Huet subsp. refractum (Nábelek) Mory: Role of NRF2-KEAP1 Pathway

The extracts of Glaucium grandiflorum have been used to treat neurodegenerative diseases. Nonetheless, no former study has investigated whether the alkaloid extracts of G. grandiflorum have antioxidative effects against oxidative stress. The aim of the present study was to determine the antioxidative effects of the alkaloid extracts of G. grandiflorum with a variety of targets and probable mechanisms. First, we used spectrophotometry to investigate alkaloid extracts with respect to their alkaloid amounts. Then, we determined the alkaloid extracts’ impact on thiol/disulfide homeostasis, total oxidant status/total antioxidant status/oxidative stress index, and antioxidant enzyme activities. Finally, the effects of alkaloid extracts on the genes in the NRF2-KEAP1 pathway were determined via qRT-PCR. We conducted molecular docking analyses to determine the potential binding of isoquinoline alkaloids found within the alkaloid extracts with target proteins. We observed the best results from chloroform alkaloid extract and methanol alkaloid extract. Chloroform alkaloid extract was prominent in DPPH radical scavenging and metal ions chelating, and methanol alkaloid extract showed significant hydroxyl radical scavenging, lipid peroxidation, and superoxide anion radical scavenging activity. Alkaloid extract groups substantially increased in total thiol activity, native thiol activity, disulfide activity, total antioxidant status level, antioxidant enzyme levels, and gene expression levels (GCLC, HO-1, NRF2, and NQO1) compared to the H2O2 group. Also, alkaloid extract groups led to a significant drop in total oxidant status level, oxidative stress index level, and KEAP1 gene expression level relative to the H2O2 group. According to our study results, oxidative stress brought about by H2O2 was regulated by alkaloid extracts. As a result, a phytochemical-based therapeutic that regulates H2O2-induced oxidative stress was brought to the neurochemical field.

Evaluation of oxidative stress levels as biomarkers in vitiligo patients

Abstract Objective: Vitiligo is a skin disease that causes the loss of melanocyte cells, which produce pigment in the skin. There is evidence that oxidative stress plays an important role in vitiligo disease of unknown pathogenesis. Evidence suggests that there is increased oxidative stress in melanocytes in patients with vitiligo. The aim of this study is to investigate oxidative stress markers in patients with vitiligo. Materials and Methods: Blood samples were taken from 23 vitiligo patients and 23 healthy control groups without any disease in Bezmialem Vakıf University Hospital Dermatology and Venereal Diseases Outpatient Clinic. Total antioxidant levels (TAS) and total oxidant levels (TOS) were measured photometrically method with blood samples. The oxidative stress index (OSI) was calculated as the TOS to TAS level ratio. Results: When the results of the vitiligo patient group were compared with the control group, TOS and OSI were found to be significantly higher than the control group (P &lt; 0.05). No statistically significant result was found in TAS. Conclusions: Our results show that oxidative stress plays a role in the pathogenesis of vitiligo.

Effect of mode of delivery on neonatal oxidative stress and dynamic thiol-disulfide homeostasis.

To evaluate the effect of the mode of delivery on neonatal oxidative stress and dynamic thiol-disulfide homeostasis. Sixty women who were followed up in the Obstetrics and Gynecology clinic were included in this prospective study. Cord blood samples were obtained from women who underwent cesarean section (CS) and vaginal delivery (VD). Total oxidant status and total antioxidant status levels were measured by spectrophotometry. The dynamic thiol-disulfide balance was determined by colorimetry. The total antioxidant status and oxidative stress index levels were higher and total oxidant status levels were lower in the VD group compared with the CS group. Native and total thiol levels were higher while disulfide levels were lower in the VD compared with the CS delivery group, while disulfide levels were higher in the CS group. These results indicate that disulfide formation leads to decreased antioxidant capacity in women undergoing CS. Monitoring of dynamic thiol-disulfide levels may thus provide clinicians with important information on the oxidative stress status in newborns.

Protective efficacy of pirfenidone in rats with pulmonary fibrosis induced by bleomycin.

Bleomycin causes increased production of reactive oxygen species, leads to pulmonary toxicity, fibroblast activation, and fibrosis. This study aimed to evaluate the protective effect of pirfenidone on bleomycin-induced lung toxicity in rats. Twenty-eight adult rats were randomly divided into 3 groups; Bleomycin (B group, n=10), Bleomycin and Pirfenidone (B-PND group, n=13), and the control group (n=5). The bleomycin regimen was administered for 9 weeks. Pirfenidone was administered at 100 mg/kg daily. Total antioxidant level (TAS), total oxidant level (TOS), tumor necrosis factor (TNF-α), transforming growth factor (TGF-β1), matrix metalloproteinase-2 (MMP-2), plasminogen activator inhibitor (PAI) levels were studied. Histopathologically, sections were stained with Hematoxylin-eosin and Masson-trichrome for grading-scoring according to the Ashcroft score. Stage 3 fibrosis was observed in 50% of the B group rats, stage 3 and higher fibrosis was never detected in the B-PND group and the difference was statistically significant (p=0.003). When evaluating tissue inflammation, the inflammation was higher in the B-PND group than in the other groups (p<0.001). Pleuritis was detected in all rats in group B, while was not observed in B-PND and control group (p<0.001). The TAS level was found to be significantly higher in group B than in group B-PND (p=0.034), while no difference was found between TOS, TNF-α, MMP-2, PAI, TGF-β1. Pirfenidone had a statistically significant protective effect in bleomycin-induced lung fibrosis and pleuritis in rats. Despite the presence of inflammation in the tissue, no significant changes were observed in inflammation markers in the peripheral blood. Novel serum biomarkers are needed to indicate the presence of inflammation and fibrosis in the lung.

Bioactive Component Analysis of Dices of Pomegranate Fruits in Different Phenotype

Pomegranate fruit is a type of fruit belonging to the family of Lythraceae, consisting of shell, kernel, grains and dice. In this study, pomegranates of 3 different genotypes (local name: deve dişi, hicaz and nuz ekşisi) harvested (October-December), which are widely cultivated in the province of Gaziantep, Oğuzeli, were collected, and after identification, the dice sections were removed and dried in the shade. Total antioxidant and total oxidant levels, animicrobial activities, DNA protective activity and total flavanoid and total phenolic content were determined in 18 extracts in 3 different solvents (methanol, ethanol and DMSO) with solid-liquid extraction. Kirby-Bauer disc diffusion method was used to determine antimicrobial properties. According to the results obtained, 100% of Escherichia coli, Stenotrophomonas maltophilia, Staphylococcus aureus strains were resistant to all membrane extracts. While antioxidant levels of all membrane extracts were found highly and oxidant levels were found to be low. It was determined that the extracts have the potential to protect DNA against oxidative damage caused by UV and H2O2. Total phenolic determination by Folin-Ciocalteu method; Total flavonoid amount was measured by AlCl3 using colorimetric method. Compared to the solvent and extraction methods used, high results were obtained in both phenolic and flavonoid determinations in all extracts, although they differed slightly among themselves. While the pomegranate fruit is consumed as food, the dice and shell parts are discarded. According to our study results, it is thought that alternative new products that can be used in complementary medicine can be obtained from pomegranate membranes that have a rich bioactive composition.

Total antioxidant, total oxidant and oxidative stress levels in free-living birds

Antioxidants provide protection against free radicals formed as a result of increased metabolism in living organisms and the damage these radicals cause to the cell. For this reason, determining the antioxidant levels can help eco-physiologists in the field in understanding the physiological state of the animal at that moment and in conservation biology. In this study, TAC, TOC and OSI values of 12 Long-legged Buzzards (Buteo rufinus), 7 Common Buzzards (Buteo buteo) and 6 Golden Eagles (Aquila chrysaetos), 15 Grey Herons (Ardea cinerea), 7 Eurasian Eagle Owls (Bubo bubo) brought to rehabilitation centre with injuries due to various reasons were examined. First of all, physical examinations of the birds brought to the centre were made. They were then kept in species-specific rooms until recovery. After they were rehabilitated, blood was taken from the birds 1-2 days before they were released into the nature. As a result of blood analysis, TOC and OSI values were found to be high in Eurasian Eagle Owl, Golden Eagle, Long-legged Buzzard and Common Buzzards which were brought with a diagnosis of gunshot wounds, soft tissue trauma, femur or wing fractures. Although these birds were rehabilitated, the reason why TOC and OSI values were high in the individuals brought with these diagnoses may be the trauma experienced by these free-living birds and their subsequent detention in captivity. After the birds were treated and rehabilitated, they were released back to nature in habitats specific to each species.

Assessment of the Serum Ischemia Modified Albumin Level and Its Relation to Total Oxidant Status and Disease Activity in Vitiligo Patients

Abstract Background Vitiligo is an acquired depigmentary skin disorder characterized by loss of functioning epidermal melanocytes. Oxidative stress has been suggested to be the initial pathogenic event in melanocyte degeneration. Total oxidant status (TOS) had been reflect the global status of oxidative stress in serum. While, albumin acts as a buffering agent for toxic molecules within the circulation. It undergoes structural changes when exposed to ischemia or oxidative stress and ischemia modified albumin IMA are produced under these conditions with high levels. Hence it considered as a marker of oxidative stress in different clinical conditions. Aim of the Work The aim of this work was to evaluate the serum level of ischemia modified albumin in vitiligo patients and its relation to total oxidant status and disease activity. Patients and Methods This is a cross sectional study. Forty-eight patients with vitiligo were included in this study. Twenty-four were considered active cases while the other 24 were non-active vitiligo patients. The study also included 48 age-and sex-matched healthy adults as a control group. Five ml of venous blood were withdrawn from each patient and control subjects. The vitiligo activity and tensity were assessed by VIDA and VETI scores respectively. Serum IMA and TOS had been assist by ELISA kits. Results Our study found a significant increase in serum total oxidant status (TOS) and serum ischemia-modified albumin (IMA) levels in vitiligo patients compared to controls. We also found a positive correlation between TOS levels and IMA levels and vitiligo disease activity represented by VIDA score. Conclusion The total oxidant status (TOS) and IMA levels were increased in vitiligo patients' sera and positively correlated to disease activity. To the best of our knowledge, we were the first to detect the significantly positive correlation between serum IMA and vitiligo disease activity.

Assessment of the Serum High-Mobility Group Box 1 Level in Vitiligo Patients in Comparison to Healthy Subjects and Its Relation to Total Oxidant Status and Disease Activity

Abstract Background Vitiligo is an acquired pigmentary disorder of unknown etiology, affecting approximately 1% of the world population, without predilection for race or sex. It is characterized by white macules and patches, whose size increases over time, due to the loss of melanocytes. Aim of Work The aim of work was to evaluate the serum level of high-mobility group box 1 in vitiligo patients and its relation to total oxidant status levels and disease activity. Subjects and methods This is a cross-sectional study which was carried out on 48 patients diagnosed as having vitiligo (24 active patients and 24 and non active) and 48 health controls for 6 months duration. All patients were selected from the dermatology outpatient clinic of vitiligo, Ain-Shams University Hospitals. Results The serum levels of HMGB1 among patients and controls revealed that patients had a statistically high significant levels of HMGB1 (p value 0.001), HMGB1 serum levels in vitiligo patients were significantly positively correlated to TOS serum levels and VIDA score (p value 0.001), between active and non-active group, there was a highly statistical significant difference between the two groups regarding serum level of HMGB1, as the serum HMGB1 levels were much higher in active compared to non-active patients (p value 0.001). Conclusion HMGB1 is a crucial damage associated molecular pattern molecule that links oxidative stresses to the formation of autoimmunity in the pathogenesis of vitiligo. HMGB1 is a crucial inflammatory factor involved in the progression of vitiligo. Serum HMGB1 level is a promising biomarker for monitoring disease activity in patients with vitiligo. HMGB1 may be a promising therapeutic target for the treatment of vitiligo.

A comprehensive assessment of redox balance in small for gestational age newborns and their mothers.

The objective of this study was to assess oxidative stress in small for gestational age (SGA) newborns and their mothers by evaluating intra- and extracellular thiol homeostasis and the quantification of major oxidants and antioxidants. A total of 75 mothers and their 75 newborns (43 SGA) were enrolled in this study. Thiol-disulfide homeostasis, serum myeloperoxidase, catalase, total oxidant, and antioxidant status were analyzed. Additionally, erythrocytic glutathione (GSH) homeostasis was measured. Although native and total thiol levels were decreased, disulfide levels were increased in SGA groups. Additionally, myeloperoxidase activity and total oxidant status levels were significantly elevated whereas total antioxidant status levels and enzymatic antioxidant systems were diminished in SGA groups. Similarly, intra-erythrocytic GSH homeostasis was shifted in favor of oxidants in SGA groups. Our results demonstrate that insufficient antioxidant systems in mothers and a robust source of oxidative stress in SGA might contribute to the pathophysiology of SGA births.

Effect of Melatonin on Increasing the Effectiveness of Liver Preservation Solution.

Various tissue preservation solutions are used during the removal of the organ and during transplantation to protect the normal histological and biochemical characteristics of tissue while performing a successful liver transplant. In our study, it was aimed to investigate the effects of intraperitoneal melatonin administration on liver preservation damage before transplantation. In our study, the histological and biochemical characteristics of University of Wisconsin+melatonin group rats treated with melatonin 45 minutes before hepatectomy were compared between serum physiologic group and University of Wisconsin group. When hematoxylin and eosin staining was evaluated in terms of hydropic degeneration, sinusoidal dilatation, and hepatocyte necrosis, there was no statistically significant difference. Caspase 3 immunohistochemical staining showed a significant increase in Caspase 3 immunoreactivity positivity at the 12th-hour University of Wisconsin group compared to University of Wisconsin+melatonin group. As a result of biochemical analysis, the malondialdehyde and total oxidant status levels in the University of Wisconsin+melatonin group decreased significantly compared to the University of Wisconsin group. When the reduced glutathione activity and total antioxidant capacity level were compared, a significant increase was observed in the University of Wisconsin+melatonin group compared to the University of Wisconsin group at the 12th hour. It was also found that aspartate aminotransferase, alanine aminotransferase, and alkaline phosphatase levels decreased significantly in the University of Wisconsin+melatonin 12th-hour group compared to the University of Wisconsin 12th hour and control group. When the findings were evaluated, intraperitoneal administration of melatonin, a cytoprotective antioxidant, was found to play an effective role in preserving immunohistochemical and biochemical properties of liver tissue integrity and hepatocytes in University of Wisconsin solution.

Analysis of the Essential Oil Composition, Antimicrobial Activity and Antioxidant Capacity of Fumaria asepala Boiss. and Fumaria schleicheri Soy.Will. subsp. microcarpa Hausskn. from Turkey

This study aims to determine the antimicrobial and antioxidant activities of essential oil components and methanol extracts of Fumaria asepala Boiss. (Akşahtere) and Fumaria schleicheri Soy.-Will. subsp. microcarpa Hausskn. (Şahtere) species grown in Turkey. While essential oils were isolated by the hydrodistillation method, the analysis of these oils was determined by GC/MS device. According to the results obtained, the main component of the essential oil of F. asepala is Phytol (20.74%), followed by Thymol (20.42%), Benzyl Benzoate (15.89%), and Hexahydrofarnesyl acetone (12.92%); It was determined that the main component of the essential oil of F. schleicheri subsp. microcarpa is Benzyl Benzoate (29.07%), followed by Hexahydrofarnesyl acetone (19.72%), n-Hexadecanoic acid (11.40%) and Phytol (10.04%). The disk diffusion method was used to determine its antimicrobial effects. The above-ground parts of F. schleicheri subsp. microcarpa showed the best antimicrobial effect against K. pneumoniae-ATCC 700603 (25mm), while F. asepala showed the best antimicrobial effect against S. aureus-ATCC 25923 (24mm) and K. pneumoniae (24mm). To determine their antioxidant effects, total antioxidant level (TAS) and total oxidant level (TOS) were determined. It was determined that the TAS value of the methanol extract of F. schleicheri subsp. microcarpa at a concentration of 1 mg/ml was 2.8314 mmol, and the TOS value of F. asepala was 3.1610 mmol at the same concentration. It was determined that the total oxidant levels in both species were high.

ANKAFERD BLOOD STOPPER BAX/BCL-2 VE CYT-C/CAS-3 YOLAKLARI ARACILIĞIYLA MİTOKONDRİYAL STRESLE İLİŞKİLİ APOPTOZU AZALTARAK KADMİYUM KAYNAKLI AKCİĞER HASARINI HAFİFLETİR

As a result of environmental factors, cadmium (Cd)&#x0D; taken into the body causes damage to lung tissues&#x0D; through inflammation, oxidative stress, and increased&#x0D; apoptosis. Ankaferd Blood Stopper (ABS), which is&#x0D; used as a hemostatic agent, has antioxidant, antiinflammatory,&#x0D; antibacterial, antiapoptotic, and wound&#x0D; healing properties due to five different plant extracts&#x0D; and components in its composition. Therefore, in our&#x0D; study, we aimed to investigate the curative effect of&#x0D; ABS on the toxicity of Cd on the lung.&#x0D; Material and Method&#x0D; Thirty two rats were used in the study, and they were&#x0D; divided into 4 groups, with 8 rats in each group:&#x0D; control, Kd (2.5 mg/kg single dose ip), ABS (1.5 ml/&#x0D; kg single dose ip), and Kd+ABS (Kd, 2,5 mg/kg single&#x0D; dose ip-ABS, 1.5 ml/kg single dose ip). Lung tissues&#x0D; were evaluated histopathologically. Inflammation&#x0D; was evaluated immunohistochemically with tumor&#x0D; necrosis factor-α (TNF-α). Oxidative stress was&#x0D; evaluated with the total oxidant level (TOS) and total&#x0D; antioxidant level (TAS) using the spectrophotometric&#x0D; method. Apoptosis was evaluated using RT-PCR with&#x0D; relative mRNA fold changes of Bcl-2-associated X&#x0D; (Bax), B-cell lymphoma 2 (Bcl-2), cytochrome c (Cyt&#x0D; c), and caspase 3 genes.&#x0D; Results&#x0D; Histopathological findings such as congestion,&#x0D; hemorrhage, and mononuclear cell infiltration were&#x0D; found to increase in the Cd group. It was found that&#x0D; Cd increased inflammation by increasing TNF-α,&#x0D; increasing TOS and OSI, and decreasing TAS,&#x0D; causing an increase in oxidative stress. (p

Actividades antioxidantes y antiinflamatorias del ácido gálico en codornices japonesas inducidas por estrés oxidativo

Gallic acid is a phenolic compound found in many plant sources with strong antioxidant activity. In this study, the bioactivity of Gallic acid was investigated in Japanese quails induced by oxidative stress. The study was performed on four groups of 40–day–old male Japanese quail (Coturnix japonica). Oxidative stress was created for 1 week by adding 0.5% hydrogen peroxide. The study was terminated by administering 100 mg·kg-1 body weight Gallic acid intraperitoneally. Total antioxidant and total oxidant level analyzes from liver tissue homogenates were performed using a ready–made commercial kit. TNF–α levels from blood samples taken for anti–inflammatory activity were investigated by ELISA method. There were no statistically significant results on live weight gain between the experimental groups and control group. However, Gallic acid in liver homogenates together with H2O2 increased total antioxidant state (TAS) compared to H2O2 application, while it decreased total oxidant state (TOS) in the same groups. Moreover, while the oxidative stress index increased in the H2O2 group, it decreased significantly in both the Gallic acid and Gallic acid + H2O2 groups. Gallic acid application also caused regression in blood TNF–α expression levels, which were increased by H2O2 . In quails, Gallic acid showed antioxidant activity by increasing TAS levels and decreasing TOS levels, providing a significant decrease in oxidative stress index. It also provided anti–inflammatory activity by suppressing TNF–a levels. However, advanced molecular analyzes are needed to obtain more detailed information on the subject.

The Evaluation of Dietary Antioxidant Capacity, Dietary Inflammatory Index and Serum Biomarkers in Breast Cancer: A Prospective Study

Dietary antioxidant capacity (dTAC) and dietary inflammatory index (DII) are commonly used to assess nutrition. This prospective study examined dTAC, DII, and serum biomarkers in women with breast cancer (BC). Patients were followed-up before surgery (T1), before chemotherapy (T2), at 6th (T3) and 12th months of chemotherapy (T4). Serum tumor necrosis factor alpha, interleukin 1β, interleukin 6, protein carbonyl, malondialdehyde, total antioxidant capacity (TAC), and total oxidant status levels were analyzed. Dietary antioxidant intake, dTAC, and DII were determined using a three-day dietary record. dTAC was calculated using vitamin C equivalent (VCE), oxygen radical absorption capacity (ORAC), trolox equivalent antioxidant capacity (TEAC), total radical-trapping antioxidant parameter (TRAP), and ferrous ion reducing antioxidant potential (FRAP). This study included 32 women with BC and 32 controls (CG). ORAC, TEAC, TRAP, and FRAP were significantly lower in BC than in CG. During follow-up, only ORAC increased significantly at T2 compared to T1. A weak positive correlation was found between dTAC (VCE) and serum TAC levels at T2 (rho = 0.371, p = 0.036). The relationship between diet and serum biomarkers was not significant. Multicenter prospective studies on different age groups are needed to understand the association between diet and serum biomarkers levels in patients with BC.

Protective Effects of Different Doses of Ginsenoside-Rb1 Experimental Cataract Model That in Chick Embryos

Purpose There has been increased interest in phytochemical antioxidants to prevent protein damage and aggregate formation in cataract treatment. In this study, the protective effect of different doses of Rb1 (GRb1), one of the ginsenosides of Panax Ginseng, in the experimental cataract model formed in chick embryos was investigated. Methods Five different experimental groups were formed with 100 SPF fertilized eggs: Control (0.9% NaCl to physiological saline), hydrocortisone hemisuccinate sodium (HC), low dose (HC + L-GRb1 (1 mg/kg)), medium dose (HC+). M-GRb1 (2.5 mg/kg)), and high dose (HC + H-GRb1 (5 mg/kg)). All solutions were given to air sack at 15 days of incubation. On the 17th day, the bulbous oculi of the chick embryos were dissected. Cataract formations of the lenses, glutathione (GSH), malondialdehyde (MDA), total antioxidant (TAS), total oxidant (TOS) levels, Caspase-3 H-score, and TUNEL index were determined. In addition, crystalline alpha A (CRYAA) gene expression was evaluated. Results Cataracts were observed in the control, HC, HC + L-GRb1, HC + M-GRb1, and HC + H-GRb1 groups with a frequency of 0%, 100%, 75%, 56.25%, and 100%, respectively. There were statistically significant differences between the control and HC groups in terms of TAS, TOS, MDA, GSH, Caspase-3 H-score, and TUNEL index (p < .05). When the therapeutic effect of the GRb1 groups was evaluated, the HC group showed significant differences with the HC + L-GRb1 and HC + M-GRb1 groups in almost all parameters (p < .05), while there was no statistical difference with the HC + H-GRb1 group (p > .05). In addition, gene expression levels differed between the groups, although not statistically significant (p > .05). Conclusion 1 mg/kg and 2.5 mg/kg GRb1 applications show therapeutic properties on the HC-induced cataract model. This effect is more pronounced at 2.5 mg/kg.

Effects of chronic core training on serum and erythrocyte oxidative stress parameters in amputee football players.

Objective: The positive impact of aerobic exercise on blood oxidative stress parameters is well documented. However, the effect of core exercises on these parameters in amputee football players (AF) remains unclear. Therefore, this study aims to investigate the impact of core exercises on blood oxidative stress parameters in this population. Methods: Experimental method was adopted in the study. Eleven elite AF players participated in the study. The participants were divided randomly into two groups a core exercise group (CEG) and a control group (CG). Blood measurements were taken before and after the 8-week core exercise program. Blood measurements included erythrocyte Total Oxidant Status (eTOS), erythrocyte Total Antioxidant Status (eTAS), erythrocyte oxidative stress index (eOSI), serum nitric oxide (sNO), serum Total Oxidant Status (sTOS), serum Total Antioxidant Status (sTAS), serum oxidative stress index (sOSI), serum total thiol (sTT), serum native thiol (sNT), and serum disulfide (sDS) parameters were studied. Results: According to the results of the study, a significant difference was found between the 0th and eighth week pre-aerobic training load (ATL) sTOS (p = .028) values of CEG values. A significant difference was found in sTOS (p = .028) and sOSI (p = .028) values after the 0th and eighth-week pre-ATL. A significant difference was found in the sTOS (p = .043) and sOSI values (p = .043) of CG at week 0th and eighth-week pre-ATL. Conclusion: Overall, the results suggest that core exercises had a positive effect on blood oxidative stress parameters in AF players by reducing blood total oxidant levels.

Molsidomine decreases hyperoxia-induced lung injury in neonatal rats.

The study's objective is to evaluate if Molsidomine (MOL), an anti-oxidant, anti-inflammatory, and anti-apoptotic drug, is effective in treating hyperoxic lung injury (HLI). The study consisted of four groups of neonatal rats characterized as the Control, Control+MOL, HLI, HLI + MOL groups. Near the end of the study, the lung tissue of the rats were evaluated with respect to apoptosis, histopathological damage, anti-oxidant and oxidant capacity as well as degree of inflammation. Compared to the HLI group, malondialdehyde and total oxidant status levels in lung tissue were notably reduced in the HLI + MOL group. Furthermore, mean superoxide dismutase, glutathione peroxidase, and glutathione activities/levels in lung tissue were significantly higher in the HLI + MOL group as compared to the HLI group. Tumor necrosis factor-α and interleukin-1β elevations associated with hyperoxia were significantly reduced following MOL treatment. Median histopathological damage and mean alveolar macrophage numbers were found to be higher in the HLI and HLI + MOL groups when compared to the Control and Control+MOL groups. Both values were increased in the HLI group when compared to the HLI + MOL group. Our research is the first to demonstrate that bronchopulmonary dysplasia may be prevented through the protective characteristics of MOL, an anti-inflammatory, anti-oxidant, and anti-apoptotic drug. Molsidomine prophylaxis significantly decreased the level of oxidative stress markers. Molsidomine administration restored the activities of antioxidant enzymes. Molsidomine prophylaxis significantly reduced the levels of inflammatory cytokines. Molsidomine may provide a new and promising therapy for BPD in the future. Molsidomine prophylaxis decreased lung damage and macrophage infiltration in the tissue.

Investigation of the antitumoral activity of Arthrospira platensis (Spirulina platensis) in mice

In this study, the anti-tumoral effect of S. platensis was investigated in Balb-c mice with EAT (Ehrlich Acid Tumor). S. platensis was applied in the form of 200 mg/kg and 800 mg/kg concentrate. Blood taken from mice was separated into their serum and TAL (Total Antioxidant Level), TOL (Total Oxidant Level), ALT (Alanine Aminotransferase) and AST (Aspartate Aminotransferase) parameters were studied. Kidney, stomach, small intestine and large intestine tissues of the sacrificed subjects were removed and evaluated pathologically. As a result, when the biochemical values of S. platensis activity and control groups were compared statistically there was no statistically significant difference, excepting TOL. Also, in the pathological evaluation, the spread of the tumor in organs such as the large intestine and stomach was statistically significantly different.